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Hi Craig, (commercial response)

 in case of a power cut, the Z motor will drop without causing any damage.
The system has an absolute position sensor, so it will realize the motor
has dropped and move it back to the set position once the power is switched
on again.

(repositioning accuracy is 30nm, not 60nm as mentioned).

Kind regards, Jens


On Fri, Jun 19, 2015 at 12:35 PM, Craig Brideau <[log in to unmask]>
wrote:

> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> Post images on http://www.imgur.com and include the link in your posting.
> *****
>
> Do the linear motors have a retention function to maintain position with
> loss of power? I've only used such motors for XY applications, and never in
> Z because they would drop like a rock when the power is cut.
>
> Craig
>
> On Fri, Jun 19, 2015 at 9:27 AM, jens rietdorf <[log in to unmask]>
> wrote:
>
> > *****
> > To join, leave or search the confocal microscopy listserv, go to:
> > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> > Post images on http://www.imgur.com and include the link in your
> posting.
> > *****
> >
> > Hi Anton,
> > Acquifer.de uses linear motors for imaging machines with 30mm
> (millimeter)
> > travel range 60nm repositioning accuracy.
> > Contact me offline for more info.
> > Kind regards, Jens
> > (freelance consultant @Acquifer)
> > Em 18/06/2015 06:03, "Anton Kamnev" <[log in to unmask]> escreveu:
> >
> > > *****
> > > To join, leave or search the confocal microscopy listserv, go to:
> > > http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> > > Post images on http://www.imgur.com and include the link in your
> > posting.
> > > *****
> > >
> > > Dear colleagues,
> > >
> > > In our LM core we normally use piezo stage inserts (e.g. PRIOR) for
> > > acquisition of Z-stacks. Those work fast and reliable but very have
> > limited
> > > range (100~400 um). Moreover, stage inserts are often bulky and we
> > > experience a lot of problems fitting large specimens/slides into them.
> > >
> > > Obvious solution would be to get rid of piezo inserts and use base
> motor
> > > instead (which moves objective instead of sample). This would give more
> > > manoeuvre space at the stage and much bigger travel range.
> Unfortunately
> > > most of base motors are rather slow and often lack required precision.
> > >
> > > At the moment I’m looking into purchasing of new scope and thus
> wondering
> > > if
> > > there have been any advance in microscope base manufacturing.
> > >
> > > The question is - are there microscope bases which would move objective
> > > with
> > > speed and precision matching those of piezo inserts? If so, I would
> > greatly
> > > appreciate if you could share your experience with those.
> > >
> > > Sincerely,
> > > Anton.
> > >
> > > Anton Kamnev, PhD
> > > Imaging Manager
> > > Mechanochemical Cell Biology Building
> > > Division of Biomedical Cell Biology
> > > Warwick Medical School
> > > The University of Warwick
> > > Coventry, CV4 7AL UK
> > > tel: +44 (0) 24-7615-1934
> > > cell: +44 (0) 782-408-6941
> > > email: [log in to unmask]
> > >
> >
>